Neoprene rubber rolls or NBR rubber rolls? Which is better for industrial conveyor belts?

2022-06-30 14:43:48

Neoprene rubber is a synthetic rubber produced by the polymerization of neoprene. Neoprene rubber has high strength, good plasticity, medium elasticity, oxygen and ozone resistance, and oil resistance. It has strong adhesion to many substances, good flame resistance and wear resistance, and low air permeability.

Neoprene rubber rolls.jpg

The solubility parameter of neoprene rubber accounts for δ=9.29.41. Soluble in toluene, xylene, ethylene dichloride, trivanadium ethylene, slightly soluble in acetone, methyl ethyl ketone, ethyl acetate, cyclohexane, insoluble in n-hexane, solvent gasoline, but soluble in good solvents in appropriate proportions It is a mixed solvent composed of poor solvent and non-solvent or poor solvent and non-solvent, which swells in vegetable oil and mineral oil without dissolving.

Neoprene rubber has good physical and mechanical properties, oil resistance, heat resistance, flame resistance, sunlight resistance, ozone resistance, acid and alkali resistance, and chemical resistance. The disadvantage is poor cold resistance and storage stability. Has high tensile strength, elongation and reversible crystallinity, good adhesion. Aging resistance, heat resistance. Excellent oil and chemical resistance. Weather resistance and ozone aging resistance are second only to ethylene propylene rubber and butyl rubber. The heat resistance is comparable to that of NBR rubber, the decomposition temperature is 230-260°C, the short-term resistance is 120-150°C, and the long-term use at 80-100°C has certain flame retardancy. Oil resistance is second only to NBR rubber. Good resistance to inorganic acid and alkali corrosion. The cold resistance is slightly poor, and the electrical insulation is poor. The storage stability of raw rubber is poor, and the phenomenon of "self-sulfur" will occur, the Mooney viscosity will increase, and the raw rubber will become hard.

Neoprene rubber is an indispensable and important special synthetic rubber material in the rubber product processing industry. Neoprene rubber is widely used in general industrial products, anti-weathering products, viscose soles, coatings and rocket fuel, auto parts, wire and cable jackets and adhesives, etc. Ordinary neoprene tends to crystallize at room temperature. Therefore, anti-crystallization improved varieties were developed which were copolymerized with specific monomers to inhibit molecular alignment.

NBR rubber is a copolymer obtained by the polymerization of butadiene and acrylonitrile monomers. The full name is Nitirle-Butadene Rubber. It has excellent oil resistance, benzene resistance, heat resistance and physical and mechanical properties. NBR rubber is one of the general raw materials for oil-resistant rubber products. NBR rubber is widely used in the manufacture of oil-resistant gaskets, gaskets, hoses, airplane mailboxes, flexible packaging, printing and dyeing rubber rollers, cable materials and adhesives Wait.
NBR rubber rolls.jpg

NBR rubber has the following properties:

Oil resistance:

Oil resistance is the biggest feature of NBR rubber. Because it contains polar cyano groups, it has high stability to non-polar or weakly polar oils and organic solvents, and its oil resistance is second only to polysulfide rubber and fluor rubber. The higher the propylene content, the better the oil resistance.

High and low temperature resistance:

The heat resistance is better than that of natural rubber, styrene-butadiene rubber, and neoprene rubber, and can be used for a long time at 120 ℃ in the air. The cold resistance and low temperature resistance are poor, the higher the acrylonitrile content, the worse the cold resistance. With the increase of acrylonitrile content, the tensile strength, heat resistance, oil resistance, air tightness and hardness increase, but elasticity and cold resistance decrease. The glass transition temperature of nitrile rubber with 26% acrylonitrile content is -52°C, and the embrittlement temperature is -47°C; while the glass transition temperature of nitrile rubber with 40% acrylonitrile content is -22°C.

Air tightness:

Pretty good, only second to butyl rubber.

Ozone resistance, electrical insulation properties, water resistance

NBR rubber has poor ozone resistance and electrical insulation properties, and good water resistance.

The solubility parameter of NBR rubber is 8.9~9.9, and it is soluble in ethyl acetate, butyl acetate, chlorobenzene, methyl ethyl ketone, etc.

Dielectric properties:

NBR rubber has poor dielectric properties and belongs to semiconductor rubber.

Mechanical properties:

NBR rubber is non-crystalline rubber with low raw rubber strength. It needs to be mixed with reinforcing agents. Increasing the amount of combined acrylonitrile helps to increase the strength and wear resistance, but the elasticity decreases.

Processing performance:

Due to its strong polarity, it has poor compatibility with polymers with weak polarity, but it is not compatible with polymers with strong polarity such as neoprene, modified phenolic resin, and polyvinyl chloride, especially with chlorine-containing polymers. The polymers have good compatibility and are often used in combination. In addition, in order to improve processing performance, it is often used with non-polar rubbers such as natural rubber, styrene-butadiene rubber, and butadiene rubber.

Main use of NBR rubber

Nitrile rubber is mainly used to make oil-resistant products, such as oil-resistant pipes, tapes, rubber diaphragms and large oil bags, etc. It is often used to make various oil-resistant molded products, such as O-rings, oil seals, leather cups, diaphragms, valves, bellows, etc., are also used to make rubber sheets and wear-resistant parts.

Properties and uses of NBR rubber rolls

Excellent wear resistance;

The oil resistance is 30%-50% higher than that of natural rubber;

Good heat resistance, but not ozone resistant;

Excellent resistance to non-polar and weakly polar oils and solvents, but poor resistance to aromatic hydrocarbons and chlorinated hydrocarbon oils. Commonly used in printing, printing and dyeing, papermaking, packaging, chemical fiber, plastic processing and other equipment and other occasions contacting oil and aliphatic hydrocarbon solvents.

Properties and uses of neoprene rubber rolls

Neoprene rubber rolls are a synthetic rubber with very similar physical properties to natural rubber. Neoprene rubber rolls have better weatherability than natural rubber, with moderate resistance to oil, heat and ozone fluids.

Typical applications for neoprene rubber rolls include conveyor belts, coated fabrics, cable jackets, seals and leggings. 

From the above analysis, we know that neoprene rubber roll is more suitable for industrial conveyor belts than the NBR rubber roll.


Products

  1. Rubber sheet rolls
  2. Reinforced rubber sheet
  3. Natural rubber sheet
  4. Gasket sheeting
  5. Epdm rubber sheet
  6. Silicone rubber sheet
  7. Viton rubber sheet
  8. Non slip rubber sheet
  9. Rubber floor tile
  10. Horse mats
  11. Gym mats
  12. Kitchen mat
  13. Dart mat
  14. Conveyor belt
  15. poly V belt
  16. Hydraulic Hose
  17. Industrial Hose
Our Products

New Products

3mm Nitrile rubber sheet roll manufacturing with factory price
3mm Nitrile rubber sheet roll manufacturing with factory price

NBR Rubber Sheet is is a synthetic material that is used in a wide range of applications due to its resistance to most p...

China wholesale high tensile strength conveyor belt supplier
China wholesale high tensile strength conveyor belt supplier

Conveyor belts are designed to the highest standards ,to transport all types of bulk material,including mining, stone an...

China rubber gym flooring mats manufacturer export to Peru
China rubber gym flooring mats manufacturer export to Peru

China rubbe gym flooring mats can be produced length 1-30m,width 1-1.5m,thickness 1-15mm it can be made in black,blue,re...

China latex rubber sheet roll Manufacturer for sale
China latex rubber sheet roll Manufacturer for sale

Latex sheet roll is an excellent raw material for manufacturing gaskets due to its excellent physical properties. The la...

Commercial interlocking rubber floor tiles to Chile
Commercial interlocking rubber floor tiles to Chile

500x500mm,1000x1000mm interlocking rubber floor tile with black,blue,red,green,gray color is anti-abrasion, slippery-res...

China Cheap Neoprene rubber sheet export to Dubai
China Cheap Neoprene rubber sheet export to Dubai

Neoprene rubber also known as CR rubbersheet. CR rubber has excellent chemical stability, corrosion resistance, and good...

Cheap rubber tiles outdoor for playground flooring to South America
Cheap rubber tiles outdoor for playground flooring to South America

Cheap rugbber tiles outdoor for playground flooring is 500x500m and 1000x1000mm,the color is black,blue,red,green,gray c...

Popular

News

Viton rubber sheet suppliers in China

08/30/2022

Viton rubber sheet has the characteristics of excellent aging resistance, high temperature resistance, ozone resistance, oil resistance, high vacuum resistance, acid resistance and alkali resistance. ...

Nature Rubber Sheet and Synthetic Rubber Sheet for Sale

08/24/2022

We are a professional nature rubber sheet and synthetic rubber sheet manufacturer and seller. Natural rubber and synthetic rubber have their own advantages and disadvantages, and customers can purchas...

Natural Latex Rubber Sheet Roll for Clothing

08/16/2022

Natural latex rubber sheet roll has high elasticity and excellent wear resistance and impact resistance. The latex rubber sheet roll has very resistant to tearing. it is suitable for making clothing.

Give you the most complete knowledge about rubber and rubber sheets

08/09/2022

Whether it is rubber or rubber sheet, you must be familiar with the name, but many people don't know what they really are.
Learn about rubber and rubber sheets with rubber sheet manufacturers! Here i...

How much do you know about EPDM rubber?

08/02/2022

EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated diene. It is a kind of ethylene-propylene rubber, represented by EPDM, because its main chain is composed of chem...

7 Tips to Choose a Suitable Floor Mat for Your Kitchen

07/27/2022

When handling ingredients, cooking, cleaning tableware..., the kitchen floor is always easy to be wet and greasy. In addition to being unsanitary and affecting the appearance, it is more likely to sli...

Quick links:Optical brightener for plastic,